Protector



Aug. 31, 1937. c. M. o'BoYLE PROTECTOR .Filed oct. 6, 1954 INVENTOR (War/e5 M, Soy/e www m ATTORNEYS.

'1'0 Various causes.

Patented Aug. 31, 1937 PRUTIECTOR Charles IVI. Boyle, New Rochelle, N. Y.

Application (ictober 6, 1934, Serial No. 747,122

2 Claims. (Cl. 10ft-1) Aextending therebeneath for severing the protec- This invention relates to protectors and particularly to means for protecting the riling bands of shells or projectiles.

Such bands are formed of relatively soft metal,

such as copper, and in shipment or handling are easily damaged and become unserviceable. Va rious devices have been proposed for protecting the rifling bands but these proposed constructions have not been entirely satisfactory due to For example, protectors formed of fabric or rope expand when subjected to moisture or rain and are thus loosened.

A device of this character to loe satisfactory r must be so designed as to effectively protect and f 0 prevent injury or damage to the riiiing band and This invention has for its salient object to provide an eflicient protector for riiiing bands that '20 is simple in construction, economical to manufacture and can be easily and quickly applied and removed.

Another object of the invention is to provide a protector so constructed and so secured that it will be firmly held in place and Will not be shifted or displaced during transportation or handling of the projectiles.

Further objects of the invention will appear from the following specication taken in. connection with the drawing which forms a part of this application, and in 'which Fig. 1 is a fragmentary View showing a portion of a shell and showing the riing band and protector in section;

Fig. 2 is a sectional elevation taken at right angles to Fig. l and substantially en line 2-E of Fig. 1;

Fig. 3 is a detail sectional elevation tion of a shell, the rifling band and showing a slightly modified form of tion;

Fig. 4 is a fragmentary sectional elevation taken at right angles to Fig. 3 through one of the peripheral grooves in the protector and the securing means disposed therein;

Fig. 5 is a View similar to Fig. l but showing the ends of the protecting strip beveled or tapered and overlapping;

Fig. 6 is a view similar to Fig. 3 but showing the securing means as consisting of a band square in section instead of round;

Fig. 7 is a View similar to Fig. 3 but illustrating a further modication of the construction;

Fig. 8 is a view similar to Fig. 1 out showing a Wire secured to one edge of the protector and ci a porprotector constructor;

Fig. 9 is a plan View taken at right angles to Fig. 8;

Fig. 10 is a View similar to Fig. '7 but showing a different configuration of rifling band and protector adapted for use therewith;

Fig. 1l is a view similar to Fig. 10 but showing a further modiication of the rifling band and protector;

tectoi' and another form of means for the protector in position; and

Fig. 14: is a sectional elevation taken angles to Fig. 13.

securing at right The invention briefly described consists of a protector adapted vfor use in protecting the riiing band of a projectile or shell and having its inner surface conforming in shape to the outer surface of the rifling band. For instance, riiiing bands are commonly provided with annular projecting portions and recesses or grooves serving as gas checks and the inner surface of the protector is provided with an inwardly extending portion adapted to t into the annular groove and to receive the annular projecting portion.

band.

The securing means, such as straps or annular elastic bands, extends around the protector and is preferably seated in annular grooves to such an extent that the bands will not be displaced during transportation or projectile. In one form of the invention handling oi the severing means is provided in the form of a wire extending beneath the protector and secured thereto adjacent one edge thereof.

Further details of the invention will appear from the following description.

In the particular embodiment of the invention illustrated in Figs. l and 2 there is shown a shell or projectile 2B having a ring band 2i of copper or like metal.

The rifling band has formed in its outer periphery an annular gas check groove Z2 and an annular projection 23. `band also has a plurality of annular grooves 24 which serve as gas checks.

The

During transportation or shipment of shells the rifling bands are damaged, often to extent as to render them unserviceable.

such an 1n order to protect the rifling bands there is provided an annular band 25 which may be formed of any suitable.material,.hsuch as pulp ber or textile ma nrial, but is preferably formed of elastic materia'fl; suchasrubberE The protector 25 has an inwardly projecting rib 30 conforming in shape to the gas check groove 22 and also has inwardly extending annular ribs 3l arranged to seat in the annularv grooves 2li in the riing band. The edges of the protector 25 are preferably extended over the edges of the ritling band 2i and seat on the outer surface of the shell.

In the form of the invention shown in Figs. 1 and 2 the protector consists of an annular elastic band which is stretched to extend over the rifling band and upon release tightly grips the riing band and is securely held thereon. The inwardly projecting ribs which are seated in the annular or peripheral grooves oi the rifling band prevent longitudinal displacement of the protector.

In the form of the invention illustrated in Figs. 3 and Il the riiiing band 2l is substantially the same in shape and conguration as that shown in Figs.y 1 and 2. This statement also applies to the inner surface of the protector 35. The outer surface of the protector has formed therein annular recesses or grooves 36 and 31' which receive annular elastic bands or securing means 33. rThe bands SS are protected by the outwardly projecting ribs 39 and i5 which extend outwardly at the edges of the groove and are thus insured against accidental displacement during transportation or handling. The edges il of the protector extend over the edges of the rifling band and seat on the peripheral surface of the shell.

The' protector shown in Fig. 3 may consist of an annular ring or band or may consist of a strip which encircles the rifling band and has its ends abutting, as shown at t2 in Fig. 4. Fig. 5 shows the ends of the strip beveled and overlapping at 53.

Fig. 6 shows a protector similar to that shown in Fig. 3, but with spaced grooves of substantially rectangular cross-section, with retaining bands 39 of similar shape in them.

Fig. '7 shows another modification of a protector for the riiiing band 2l. 'Ihe protector l5 is similar to that shown in Figs. 3 and 6, but is provided with annular flat grooves 46, 47, and is which receive flat straps or bands L39, the bands being disposed between annular projecting ribs "ail which extend outwardly at the edges of the grooves.

Figs. 8 and 9 show the same form of protector as that illustrated in Fig. l, but in addition thereto show a wire l which is secured in any suitable manner, as shown at 52, to the protector at one edge thereof and extends across the ril-ling band within the protector beneath the major portion of the thickness of the protector, as shown in Fig. 8. At its free end the wire has formed thereon or secured thereto a loop or ring 53. When the protector is to be removed an upward pull on the ring will cause the wire to sever the protector.

Fig. 10 shows another type of rifling band 55 and a protector 56 encircling the band and secured in position by flat straps or bands 5l. This construction is similar to that illustrated in Fig. 7.

Fig. 11 shows still another type of riing band in which two bands 58 and 59 are used. The protector 50 has an inwardly extending annular rib @i arranged to t between the bands 58 and 59 an-d also has inwardly extending annular flanges or ribs t2 and 63 at the edges thereof arranged to extend over the outer edges of the riiiing bands and to seat against the periphery of the shell. The protector 5Fl, shown in Fig. 11, may be formed as an elastic band or may consist of a strip encircling the riing bands. In the latter case the protector is extended, as shown in Fig. 12, at its lateral edges to form grooves 64 which receive annular straps or bands 65. A band 6B encircles the central portion of the protector being disposed in an annular groove 61.

In the embodiment of the invention shown in Figs. 13 and 14 there is illustrated a protector 'l0 having embedded therein wires li. The protector lil is formed as a strip and when used is wrapped around the riing band and the ends of the wires ll are twisted together, as shown at l2 in Fig. 13. It will be understood that the protector 'lli shown in Figs. 13 and 14 may have the form or configuration of the protectors illustrated in the preceding gures.

From the foregoing description it will be clear that a simple, practical and inexpensive riiling band protector has been designed and that the protector will effectively protect the outer surface of the riiling band and can be easily and quickly applied or removed.

Although certain specific embodiments of the invention have been particularly shown and described, it will be understood that the invention is capable of use with other devices than riing bands and is capable of modification and that changes in the construction and in the arrangement of the various cooperating parts may be made without departing from the spirit or scope of the invention, as expressed in the following claims.

What I claim is:

1. A protector for riiiing bands comprising a strip arranged to encircle the band and having an inwardly extending rib arranged to t in an external annular groove in the rifling band and having flat grooves formed in its outer surface, and iiat securing means arranged to seat in said flat grooves.

2. A protector for riiiing bands comprising an annular strip of material having its inner surface provided with ribs and grooves arranged to t corresponding grooves and ribs on the periphery of the rifling band, said protector having external grooves and ribs at the outer edges of the grooves, and securing means seated in the external grooves, said ribs extending beyond the securing means.

CHARLES M. OBOYLE. 

